<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
<link rel="stylesheet" href="./resources/easyui/themes/bootstrap/easyui.css">
<link rel="stylesheet" type="text/css" href="./resources/layui/css/layui.css">

<script type="text/javascript" src="./resources/jquery/jquery-3.1.0.min.js"></script>
<script src="./resources/bootstrap/js/bootstrap.min.js"></script>

<script type="text/javascript" src="./resources/layer/layer.js"></script>
<script type="text/javascript" src="./resources/layui/layui.js"></script>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" />
<script type="text/javascript">
function topMenuHandler(){
	var $childUL=$(this).children(".layui-nav");
	console.log($childUL);
}
</script>
</head>
<body>
<div>
	<ul class="layui-nav layui-nav-tree layui-nav-side">
	  <li class="layui-nav-item topMenu" onclick="topMenuHandler()">
	      <a href="javascript:void(0)">权限设置</a>
	      <ul class="layui-nav layui-nav-tree" style="padding-left: 20px">
			  <li class="layui-nav-item"><a href="javascript:void(0)">用户管理</a></li>
			  <li class="layui-nav-item"><a href="javascript:void(0)">角色管理</a></li>
			  <li class="layui-nav-item"><a href="javascript:void(0)">菜单管理</a></li>
			  <li class="layui-nav-item"><a href="javascript:void(0)">权限管理</a></li>
		   </ul>
	  </li>
	  <li class="layui-nav-item topMenu">
	      <a href="javascript:void(0)" onclick="topMenuHandler()">系统设置</a>
	  	  <ul class="layui-nav layui-nav-tree" style="padding-left: 20px">
			  <li class="layui-nav-item"><a href="javascript:void(0)">日志管理</a></li>
			  <li class="layui-nav-item"><a href="javascript:void(0)">导出设置</a></li>
			  <li class="layui-nav-item"><a href="javascript:void(0)">数据字典</a></li>
		   </ul>
	  </li>
	  <li class="layui-nav-item topMenu"><a href="javascript:void(0)" onclick="topMenuHandler()">解决方案</a></li>
	  <li class="layui-nav-item topMenu"><a href="javascript:void(0)" onclick="topMenuHandler()">大数据</a></li>
	</ul>
</div>
</body>
</html>